SU1495752A1 - Device for fault location - Google Patents

Abstract

The invention relates to the field of automation and can be used to control complex objects, such as complex process (flow) lines, communication nodes, etc., in which the control elements are functionally dependent on each other. The aim of the invention is to increase the depth of control. The device contains fault sensors 1 ₁ -1 _N , multiplexer 2, adder 3, first pulse shaper 4, first key 5, first element OR 6, pulse generator 7, prohibition element 8, counter 9, first display unit 10, second display unit 11 , the second key 12, the inverter 13, the first group of elements AND 14, the register 15, the second group of elements I16, the fourth element OR 17, the second pulse shaper 18, the third element OR 19, the group of keys 20 and the second element OR 21. As a result of polling sensors faults in the direction of the fault core is fixed on the indicator, check the address of the control point corresponding to the malfunction to be localized. This increases the depth of control. 1 il.

Description

one

(21) 4364462 / 24-2D

(22) 21 „12„ 87

(46) 23-07 0789о Bulo number 27

(72) VOFKondratyev, V.Yu.Polushin,

GoVoPrikaek and Yu „A.Sharapov

(53) 681 „325 (088.8)

(54) TROUBLESHOOTING DEVICE

 (57) The invention relates to the field of automation and can be used to control complex objects, for example, complex process (flow) lines, communication nodes, and TaDo,

control elements in which are functionally dependent on each other. The purpose of the invention is to increase the depth of the control. The device contains fault sensors I, -1, multiplexer 2, adder 3, first pulse shaper 4, first key 5, first element OR 6, generator pulses 7, prohibition element 8, counter 9, first display unit 10, second display unit I1, second key 12, inverter 13, first group of elements I14, register 15, second group of elements I16, fourth element OR 17, second pulse shaper 18, third element OR 19, gr PPU keys 20 and the second OR element 21 on a result of polling the sensors malfunctions in the direction of the core Nei spravnosti udaets fix the display address control point corresponding to localized failure of povppaet This control depth of 1 yl

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The invention relates to automation and can be used to control complex objects, such as complex technological (flow).

lines, communication nodes and tod,

The purpose of the invention is to increase the depth of control (,

The drawing shows the functional diagram of the device

The device contains sensors I. - IP faults, multiplexer 2, adder 3, first pulse shaper 4, first key 5, first element OR 6, pulse generator 7, BAN 8 element, counter 9, first 10 and second 11 display units, second key 12, inverter 13, first group of elements AND 14, register 15, second group of elements AND 16, quarterly element OR 17, second pulse generator 18, third element OR 19, group of 20 keys and second element OR 21

The device works as follows.

When the keys 20 are closed and the key 12 is open, the proposed device works in a manner similar to the well-known „Keys 12 and 20 have a mechanical connection between themselves, Toe. are closed and open at the same time and are intended for switching the operation modes of the device

Mode 1. The device operates in the mode of displaying (fixing) faults fixed by sensors 1-1, to the display unit 11 (the keys of group 20 are closed, and the key 12 is open) o

Mode 2 o The device operates in the fault localization mode, t, e, is shown to the display device only from the code of the sensor that detected the malfunction of the system element, which is the cause of the malfunction of all other system elements dependent on it (the keys of group 20 are open key 12 is closed)

In the fault localization mode, the device operates as follows:

The malfunction of the system elements is detected by the sensors I, -1 (logic level 1 for the time of the malfunction);

In the initial state, counter 9 and register 15 are cleared.

The pulses of the generator 7 through the BANCH element 8 arrive at the counting input of counter 9 and successively change its state from zero (all its outputs are logical O) to single (all outputs are logical 1), then the counting cycle is repeated Counter code 9 enters to the address inputs of multiplexer 2, which transmits the outputs of sensors 1 - Each code of counter 9 corresponds to a specific number of the sensor being polled. Moreover, the polling begins with a sensor, the state of which is a consequence of the sensor polled by the following and the ToD.

If any state sensor fixes correctly, the multiplexer output will be logic level. Through a closed key 12 at the output of the inverter 13, a single signal is triggered, which starts the shaper 18 for the time t, and generates a signal that through the elements OR 21 and BAN 8 prohibits the passage of pulses from the generator 7 to the input of the counter 9 o At the same time, the signal of the driver 18 through the element OR 19 turns on the display unit 11 and opens the elements AND 16 of the Information group from the register 15 through the element OR 17 enters the inputs of the block 11 and e on the screen, the previously recorded code is generated in register 15 ° Since the initial state of the register 15 is cleared, then to block 11 and the screen will

Oh oh

When any malfunctioning sensor detects the following sensor, the malfunction signal from the output of this sensor enters similarly to the output of multiplexer 2 (logic level 1) and starts the driver 4, which generates a signal that prevents the passage of generator 7 pulses to the counter input through the elements OR 6 and BAN 8. 9. At the same time, the signal of the imaging unit 4 opens the elements of AND 14 of the group, and the code from the output of counter 9 through the group of elements of AND 14 is recorded in the register 15.

When the next polled sensor detects a malfunction in the same way, a new sensor code from the output of counter 9 is written into the register 15o. Thus, in the register

15 always stores the code of the last polled sensor that detected the fault, the cause of the recorded malfunction by all the previously polled sensors. In case the next polled sensor detected the status correctly, then the output of multiplexer 2 will be 0 and the output of the inverter 13 will receive a single signal with this signal the one-shot 19 is started, the signal from the output of which through the OR 21 and BAN 8 elements stops the counter 9, the element 11 activates the block 11 and the elements AND 16 of the group Pr are opened and this information from register 15 through group 16 elements AND, element 17 enters the inputs of block 11, generated on the screen the sensor code that was stored in register 15 and is the code of the last faulty system element in the function-dependent chain of elements subjected to close control (fault cause code) about

Thus, during sequential polling, the register records the address of the last of the faulty dates.

equality (sensors are polled in the direction of the fault core). This increases the depth of control.

Claims (1)

Invention Formula Device for troubleshooting, containing sensors, multiplexer, pulse generator, prohibition element, first and second keys, first and second OR elements, adder, counter, register, first and second groups of And elements, first and second display units, first pulse shaper , the outputs of the sensors, respectively, are connected to the information inputs of the multiplexer and to the inputs of the adder, the output connected to the Corresponding data inputs of the first display unit, the output five 0 the multiplexer is connected to the information inputs of the first and second keys, and through the first pulse shaper - to the first input of the first OR element, the second input connected to the first key output, and the output to the first input of the second OR element, the output of which is connected to the inverting input of the prohibition element, the direct input of the pulse generator connected to the output, and the output with the counter input of the counter, the output group of which is connected to the group of address inputs of the multiplexer, and the control input of the first key is connected The first control input of the device, characterized in that, in order to increase the control depth, an inverter is introduced into the device, a second pulse shaper, a key group, a third and fourth OR elements, the output of the second key through a series-connected inverter and a second pulse shaper are connected to the first inputs the third element of the IPI and the second group of elements AND to the second input of the second element OR, the counter outputs are connected to the first inputs of the first group of elements AND, the second input connected to the output of the first electric OR, and the outputs - to the information inputs of the register, the outputs of which are connected to the second inputs of the second group of elements AND, the outlets connected to the first inputs of the fourth element OR, the output of which is connected to the information input of the second display unit controlling the input of the to the output of the third element OR, the output of the first element SHS and the outputs of the counter are connected to the information inputs of a group of keys, one output of which is connected to the second input of the third element OR, and the others to the second inputs of the fourth floor ementa OR, wherein controlling guides phody second .key 0 and the group key associated with the second control input device 0 five 0 five